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Filippo Parolini, Paolo Orizio, Anna Lavinia Bulotta, Miguel Garcia Magne, Giovanni Boroni, Gianpaolo Cengia, Fabio Torri, Daniele Alberti 
World J Gastrointest Endosc 8(12):439-443. Published online Jun 25, 2016. doi: 10.4253/wjge.v8.i12.439
Retrospective Study